| 词条 | Dimethyl dithiophosphoric acid |
| 释义 |
| Name = Dimethyl dithiophosphoric acid | ImageFile =DimethoxyPS2H.png | ImageFile1 = | ImageSize1 = | IUPACName = Dimethoxy-sulfanyl-sulfanylidene-λ5-phosphane | OtherNames = O,O-Dimethyl dithiophosphoric acid; Dimethyl dithiophosphate; Dimethyl phosphorodithioate; Dimethyl ester of phosphorodithioic acid |Section1={{Chembox Identifiers | CASNo = 756-80-9 | EINECS = 212-053-9 | PubChem = 12959 | ChemSpiderID = 12419 | InChI = 1/C2H7O2PS2/c1-3-5(6,7)4-2/h1-2H3,(H,6,7) | InChIKey = CZGGKXNYNPJFAX-UHFFFAOYAT | StdInChI = 1S/C2H7O2PS2/c1-3-5(6,7)4-2/h1-2H3,(H,6,7) | StdInChIKey = CZGGKXNYNPJFAX-UHFFFAOYSA-N | SMILES = COP(=S)(OC)S }} |Section2={{Chembox Properties | C=2 | H=7 | O=2 | P=1 | S=2 | Appearance = colorless liquid | BoilingPtC = 62-64 | BoilingPt_notes = 0.5 mm Hg | MeltingPt= | MeltingPtC = |Section7={{Chembox Hazards | EUClass = Flammable (F) Toxic (T) Corrosive (C) | LD50 = | NFPA-H = 3 | NFPA-F = 2 | NFPA-R = 1 | NFPA-S = | FlashPtC = | AutoignitionPtC = | RPhrases = {{R23/24/25}} {{R34}} {{R41}} | SPhrases = {{S23}} {{S26}} {{S36/37/39}} {{S45}} }}Dimethyl dithiophosphoric acid is the organophosphorus compound with the formula (CH3O)2PS2H. It is the processor for production of the organothiophosphate insecticide Malathion. Although samples can appear dark, the compound is a colorless, distillable liquid.[1] It is prepared by treating phosphorus pentasulfide with methanol:[2] P2S5 + 4 CH3OH → 2 (CH3O)2PS2H + H2S See also
References1. ^J. Svara, N. Weferling, T. Hofmann "Phosphorus Compounds, Organic" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2006. {{DOI|10.1002/14356007.a19_545.pub2}} 2. ^ Lefferts, J. L.; Molloy, K. C.; Zuckerman, J. J.; Haiduc, I.; Guta, C.; Ruse, D., "Oxy and thio phosphorus acid derivatives of tin. 1. Triorganotin(IV) dithiophosphate esters", Inorganic Chemistry 1980, volume 19, 1662-1670. {{DOI|10.1021/ic50208a046}} 1 : Phosphorothioates |
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